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TSI200B1 датащи(PDF) 5 Page - STMicroelectronics |
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TSI200B1 датащи(HTML) 5 Page - STMicroelectronics |
5 / 9 page TSIxxB1 5/9 This test simulates the induction phenomena that can happen between telecom lines and AC mains lines (fig. 4). TEST # 2 AC POWER INDUCTION TEST Fig. 4 : AC power induction test circuit Part #1 test conditions : VRMS = 240 V R = 600 Ω t = 0.2 s Part #2 test conditions : VRMS = 600 V R = 600 Ω t = 0.2 s Fig. 5 : Voltage at the + and - terminations of the TSI200B1, and current through it while test part 1 is applied. The TSIxxB1 withstand the AC power induction test in both cases. This test simulates the direct contact between the telecom lines and the AC mains lines. The AC power contact test consists in applying 240VRMS through a 10 Ω PTC during 15 minutes long on the device under test. The CCITT K17 recommendation specifies an internal generator impedance allowing 10 ARMS when in short circuit. The behavior of the TSI200B1 with respect to this surge is given in figure 6. TEST #3 AC POWER CONTACT TEST Fig. 6 : Voltage at the TSI200B1+&- terminations and the current through it. The figure 6 shows that after 250ms there is no current anymore flowing through the TSI200B1 device. This is due to the action of the serial PTC that limits the current through the line. This PTC is mandatory for this test. It can also be replaced by a fuse or any other serial protection that “opens” the line loop under AC contact test. |
Аналогичный номер детали - TSI200B1 |
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Аналогичное описание - TSI200B1 |
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